you could be surprise how downforce and weight are bad on ¼ same if you trap 92 mph

try it and your on 2nd place for sure

 

I'll chip in since this is a little more "lo-tech";

I think it's been shown and generally accepted that overall top end is compromised by the wing(5 mph or so). Just curious if any of you wingless guys(especially the 12 sec club) have done any before/after testing @ the track? Someone on here reported that wingless was good for +2-3 mph traps-seems like a lot but I guess its feasible.

 

I went from trapping 108 to 113 almost 114 by pulling the wing.

 

When I was out at the Bonneville Salt Flats in September, the difference between getting into the 130mph club in a stock SS/SC, and not, was all due to the wing. Once I removed it I made it in. My difference in speed traps was almost 6mph, but that was with a 1 mile course.

 

The car is scary enough at 140ish. I couldn't imagine having the wing off and losing that downforce at those speeds lol. If the consensus is that the wing holds it back bad then I will make sure to take it off.

 

Take off the wing. It's bad for performance. As for handling, I had no problems at 130+ on the Salt Flats, and the Salt Flats are not known for being smooth.

 

Just a question I've had on my mind, but is it really "technically" an LSJ if you have a TVS blower on it? Is an LSJ w/ a turbo swap still qualify as an LSJ?

Another thing, going way back to when the SS/TC was just a rumor, what are the possibilities of upgrading an LSJ to an LNF? Like how much work would that involve? I'm not considering it, I was just curious.

 

the motor is an lsj. the method of induction does not change that. a turbo doesnt make an ls1 a non ls1, same with any other motor

 

This isn't the thread for that. Yes, the LSJ is still an LSJ, even if it is turbo. The code refers to the engine, not the induction. You can't upgrade the LSJ to an LNF. The LSJ is a first gen block. The LNF is a second gen block.

Enough thread jacking.

 

Yea I gotcha, I was more referring to this thread specifically, not proper engine classifications. But there has to be a point at which it becomes very difficult to classify an engine. If you say it's the block, what if someone bores it out to be a 2.2, 2.4 liter? Sorry to thread jack btw.

Ahh ok, didn't realize the block was upgraded.

 

But, My 60# injectors aren't even close to what the stock LNF injectors can handle. Not to mention my car is down on power compared to what most LNF's with boltons claim.

The aftermarket has nothing to do with who is on top. The difference is I've been drag racing for 3 years just about every other week in the summer. I've done all the mods kept the good ones and got rid of the bad ones. Experience is what is keeping LSJ's ahead. My time doesn't even impress me. I think the car has more in it and it isn't that powerful compared to many others.

 

just wondering what did you dyno at?

 

310whp. Track weight of my car is 3250 on the dot.

 

I know I have a 12.9 in my car, and I estimate that I am pushing about 280-290 to the wheels. Just need a bit of traction.

Maxim, what are you running for tires? Slicks, DR's street tires?

 

impressive

voilà

you ¼ miles never touch 130 and so.

running top speed or ¼ it way different, you should know

 

you have serious issues if you believe you picked up 5 mph by doing that.

 

maybe not 5 mph but it help for sure and you know that for sure... i hope

15,081,90,14
14,585,92,36

½ second mean 2 mph in my case with trifecta tune


it is hard to get higher mph

 

He wasn't talking about 1/4 times. Notice he said handling.

 

Well all I know is I ran the same 60 foot and ended up with a higher speed and didnt do anything but the wing delete.

 

about that


just commented this

 

You're just gonna have to take my word for this. As far as I know, I am the only person on this forum who has taken their balt to both a track and the salt flats. I have enough experience to make a comparison.

130 is not top speed. Is merely a longer drag run, but your not competing with anybody else. The salt flats have even less traction than a track (https://www.cobaltss.net/forums/show...cient+traction). You won't hop, but you def dig holes into the ground. Plus, a track gives you some protection from the wind via walls and stands. The salt flats are wide open. You are the highest thing out there, which means you will feel the full affect of any wind.

besides, travelling 90-100mph at the end of the 1/4 is not much different from trapping 130 after a full mile. At the beginning both start from a complete stop. At a 1/4 you are done with one, and trying to get those few extra mph in the next 3/4 in the oher, which go by much faster than the first 1/4 because you're already travelling at 100+.

And since this is all about handling with or without a wing, show me a track that has a surface that is as uneven as the one in this picture. Just try going over this at 130mph. The handling did not vary or waver in the Cobalt.


The following posts bring us back to the intial point about the wing restricting traps and eta's. I think what is said below is enough and should be taken as truth.

Btw, that pic was taken the morning I got into the 130 club. The following 2 days I was at the drag strip in Salt Lake City (Rocky Mountain Raceway) finishing up the bracket season. I took third for the year. I think I have enough wheel time to know what I'm talking about.

Another thing you can do is ask the Grand Am Series guys why they have all removed the wings from the Cobalts. I know that they'll tell you drag because I spent the last 2 August's at Miller Motorsports Park with pit passes when they came to town for the championship race. They only race road courses. And if that is not enough, check out these drag racing Cobalts. They have no wings either. http://images.google.com/images?gbv=...tart=0&ndsp=21. They easily trap over 130 in the 1/4.

 

DR's

 

Another thing about the salt flats is the rolling resistance of the sand is definitely higher than that of asphalt.

 

Is this still getting updated?

 

I don't think anyone has really been breaking any good times.